Battery charger



FIG. 1 is a front, top and right side perspective view of a battery charger showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a bottom. plan view thereof;

FIG. 8 is a top plan view thereof, showing the battery charger in a first state of use;

FIG. 9 is a top plan view thereof, showing the battery charger in a second state of use; and,

FIG. 10 is a top plan view thereof, showing the battery charger in a third state of use.

The broken lines in the drawings are for the purpose of illustrating elements of the battery charger that form no part of the claimed design. 

CLAIM The ornamental design for a battery charger, as shown and described. 